Laboratory Quality Results
...In Real Time
CONTACT:
Cerex Monitoring Solutions, LLC.
1816 Briarwood Industrial Ct. Ste D
Atlanta, GA. 30329
678-570-6662
Acids
VOCs, SVOCs
Fluorocarbons, CFCs
Solvents
Hydrocarbons
Combustion Gases
Organics
Fully Portable
Shepherd FTIR Portable FTIR Multi-gas Analyzer
Continuous, real time portable monitoring of 385 individual species of gas: 100+ HAPs.
®Windows is a registered trademark of Microsoft Corporation in the United States and many other countries.
Integrated Computer with Windows® Simultaneous multi-component detection
Full functionality of a PC Inherent calibration
Touchscreen Interface Internal cell for QA, or user specific calibration
Integrated WiFi and Ethernet Networking Easily configured for your application
.CSV data file output User configurable acquisition cycles, alarms
Raw data files are always saved Audible, Visual and Email alarm functionality
Software for reference file creation Software for unidentified gas analysis
Shepherd FTIR Features:
For twenty years Cerex has manufactured the premier open path FTIR analyzer: Our AirSentry FTIR. With so many installations
among diverse users worldwide, Cerex has received high quality feedback from Industry, Government, Engineers, Operators,
Systems Integrators and Scientists operating our FTIR analyzers. We listened—The Shepherd FTIR offers features and a variety of
configurations for flexible operations. An internal cell, long life consumables, a simple user interface, simplified networking and
unknown gas analysis software.
The touchscreen interface, intuitive controls, large buttons, multiple analysis routines, advanced signal smoothing and low ppb
detection limits make the Shepherd FTIR ready to meet a broad spectrum of monitoring requirements, with the flexibility to meet
the needs of field technicians as well scientists.
Unmatched Sensitivity:
Cerex Monitoring Solutions, LLC.
1816 Briarwood Industrial Court, Suite D
Atlanta, GA. 30329
678-570-6662
Industry Leading Performance only a Cerex System can deliver...
The Shepherd FTIR utilizes an ultra-sensitive cryo-cooled MCT detector system for sensing minute changes in IR absorption due to
the presence of trace concentrations of individual gases. The result of coupling our proven detection system with a 20 meter inter-
nal optical sample path and CMS real time analytic software is an industry leading FTIR multi-gas analyzer. Offering true ppb detec-
tion limits in a simple to operate portable package, in practice, only the Cerex cryo-cooled system can reliably deliver unattended,
continuous real time monitoring of ultra low ppb concentrations of individual gas species with absorption features spanning the IR
spectrum from 2 to 14 microns. There are no additional costs for sample handling, wet chemistry, carrier gas , sorbent filters or
tedious ongoing calibrations. There are none of the constant maintenance costs or extra work associated with the handling of, or
regulatory compliance issues arising from the use of liquid nitrogen coolant. Results are immediate, and the raw data containing
all the information necessary for gas identification and quantification is always saved. Low cost of ownership is achieved through a
three year routine maintenance cycle.
The Shepherd FTIR is designed to minimize operational costs and maximize uptime.
Only two consumable items: The IR Source and the Cryo-cooler Compressor
Features Defined by Years of Operator Feedback...
Cerex CMS Software:
All Cerex analyzers use Continuous Monitoring Software. CMS provides user interface, data-logging and analytic gas detection and
quantification functionality. CMS puts control where it belongs,. In your hands. Target gas concentrations and alarm parameters
are reported each user configured acquisition cycle. Alarms , acquisition time, background acquisition, detectable gases, and de-
tection limits are all user configurable. Raw single beam files are always saved, providing permanency and third party of monitor-
ing verification.
...from anywhere
Deploying the Shepherd FTIR with internet access, or adding a cellular USB modem adds powerful real-time remote control and
data access functionality. Alarms may be automatically emailed to any email address when gas concentrations exceed user-
configurable alarm thresholds, and data may be automatically emailed daily. The analyzer may be controlled and monitored from
any pc or smartphone with Internet access.
The CMS Data tab displays per acquisition
gas concentration, data validity and visu-
al alarms.
Single beam and absorption plots are
readily viewed in real time. Raw single
beam data is always saved.
Trended concentration data is available
at a glance on the CMS Data Summary
tab.
Control is in your hands...
Detection Capabilities
The Shepherd FTIR operates by sending a beam of infrared light through a twenty meter sealed sample cell within the instru-
ment. The IR beam is directed by a series of optics to an ultra-sensitive MCT detector where the absorption due to target gases is
measured and recorded. A classical least squares regression analysis compares the measured absorption spectrum to calibrated
reference absorption spectra files. Beer’s law is then used to determine gas concentrations.
FTIR Principle of Operation...
Unrivaled Detection Capabilities of Individual Gases...
The Cerex detectable gas library consists of 385 compounds, including many of the most scrutinized hazardous air pollutants. The
wide measurement spectrum makes detection of individual species simple. You can know the concentrations of the species you are
required to monitor, without erroneous concentrations due to cross interference.
Cerex Monitoring Solutions, LLC.
1816 Briarwood Industrial Court, Suite D
Atlanta, GA. 30329
678-570-6662
Shepherd FTIR Minimum Detection Limits of Commonly Requested Single Gases: Parts per Billion
Acetaldehyde 30.5 Cyclohexene 35.5 Hydrogen Sulfide 22500 Octane 12.5
Acetic Acid, monomer 70 Cyclopentene 65 Isobutane 37 Ozone 32.5
Acetone 145 Cyclopropane 100 Isobutanol 17 n-Pentane 42.5
Acetonotrile 650 1,2 Dibromoethane 115 Isobutylene 20.5 1-Pentene 50
Acetl Chloride 33.5 m-Dichlorobenzene 60 Isoctane 29.5 2-Pentene 75
Acetylene 38.5 o-Dichlorobenzene 47 Isoprene 22.5 trans-3-Pentene nitrile 29.5
Acrolein 42.5 Dichlorodifluoromethane 10 Isopropanol 55 Phosgene 10
Acrylic Acid 23 1,1 Dichloroethane 55 Mesitylene 46 Phosphine 135
Acrylonitrile 75 1,2 Dichloroethane 365 Methane 175 Propane 95
Ammonia 10 1,1 Dichloroethene 34 Methanol 20.5 Propionaldehyde 24.5
Aniline 195 1,2 Dichloroethene 100 Methyl Acetate 40 Propionic Acid 110
Arsine 85 Dichloromethane 65 Methyl Acrylate 33 Propylene 70
Benzene 170 1,2 Dichlorotetrafluorethane 10 Methylamine 145 Propylene Oxide 110
Bis-dichloroethylether 35 Diethyl Ether 13 2-Methyl 2-Butene 235 Silicon Tetrafluoride 10
Boron Trichloride 10 Dimethylamine 36.5 3-Methyl 1-Butene 80 Styrene 60
Bromomethane 410 Dimethyl Ether 45.5 Methyl Formate 75 Sulfur Dioxide 225
Butadiene 46.5 1,1 Dimethyl Hydrazine 17.5 Methyl Methacrylate 32.5 Sulfur Hexafluoride 10
n-Butane 105 Dimethyl Sulfide 15 Methyl Nitrite 33 1,1,1,2 Tetrachloroethane 19
2-Butanone 105 Ethane 80 2-Methyl Pentane 55 1,1,1,2 Tetrachloroethane 2000
Carbon Dioxide 655 Ethanol 44.5 3-Methyl Pentane 30 Tetrachloroethene 10
Carbon Disulfide 170 Ethyl Benzene 170 2-Methyl 1-Pentene 85 Tetrahydrothiophene 44.5
Carbon Monoxide 65 Ethylene 32 2-Methyl 2-Pentene 45 Toluene 170
Carbon Tetrachloride 11.5 Ethylene Oxide 55 4-Methyl 2-Pentene 60 1,1,1 Trichloroethane 27.5
Carbon Tetrafluoride 10 Ethyl Vinyl Ether 60 Methyl Vinyl Ether 70 1,1,2 Trichloroethane 70
Carbonyl Sulfide 24 Fluorobenzene 85 Methyl Vinyl Ketone 95 Trichloroethene 11.5
Chlorobenzene 75 Formaldehyde 22.5 Nitric Acid 31.5 Trichlorofluormethane 10
Chlorodifluoromethane 10.5 Formic Acid, Monomer 39 Nitric Acid 1150 Trochlorotrifluoroethane 10
Crotonaldehyde 38 Furan 55 Nitro Benzene 65 Vinyl Acetate 37.5
Chloroethane 100 n-Hexane 22.5 Nitro Ethane 150 Vinyl Chloride 80
Chloroform 12.5 Hydrogen Bromide 60 Nitrogen Dioxide 145 Vinylidene Chloride 34.5
Chloromethane 470 Hydrogen Chloride 30.5 Nitro Methane 405 m-Xylene 75
Chlorotrifluoromethane 30 Hydrogen Cyanide 340 Nitrous Acid 11 o-Xylene 135
Cyclohexane 10 Hydrogen Fluoride 10 Nitrous Oxide 95 p-Xylene 70
Powerful Communication Features
Options for Manufacturing, Engineering, Security and HAZMAT
Internal and external USB ports make the addition of optional USB peripherals such as GPS, Cellular Modem or even a Streaming Webcam possible. This flexibility adds powerful real time monitoring, automated data reporting and automated alarm reporting functionality. The Shepherd FTIR may be deployed and environmental conditions monitored by onsite personnel as well as remote decision makers via any PC or smartphone with an internet connection.
Simplified Process Control Integration, Industrial Communication, Control Outputs, Data Acquisition Inputs
The Shepherd FTIR is available with user specific control outputs , as well as MODBUS, Serial and analog outputs to allow simple
and direct integration with existing data acquisition and control systems.
Core Data Acquisition and Integrated Meteorological Monitoring
External Battery Systems
The Shepherd FTIR smart charger will charge and maintain the internal lithium polymer battery while simultaneously supplying power for continuous monitoring. Ready to go at a moments notice, a variety of optional external batteries are available to extend continuous monitoring capability in the absence of power.
With optional inputs the Shepherd FTIR is easily configured as a data acquisition system to allow logging and communication capa-bilities to be extended to particulate analyzers, ancillary sensors, external analyzers, and more. Definitive source support is availa-ble by ordering a Shepherd FTIR analyzer with integrated temperature and 3-D ultrasonic wind modeling hardware. All data param-eters are integrated into CMS data tables, and the anemometer is tripod mounted for rapid deployment.
CONTACT:
Cerex Monitoring Solutions
1816 Briarwood Industrial Court,
Suite D
Atlanta, GA. 30329
678-570-6662
www.cerexms.com
Common Applications
Chemical Manufacturing AQ
Refinery Air Quality
Fertilizer Manufacturing AQ
Container Inspection
Leak Detection
Ambient Air Quality
Indoor Air Quality
HAZMAT Response
Border Patrol Inspection
Chemical Warfare Agent
Detection
Shepherd FTIR Multi-Gas Analyzer Specifications
Contact us for a demonstration of our technology: +1 678-570-6662
Cerex manufactures a full line of UVDOAS and FTIR Multi-gas Analyzer products
for CEMs, Process Monitoring, PAAM, Leak detection, Zone Monitoring, IAQ,
Ambient Monitoring and HAZMAT Response as well as custom
analyzers for specific monitoring needs.
Cerex Shepherd FTIR General Specifications
General parameters
Measuring principle FTIR
Performance Simultaneous analysis of up to 50 gas compounds
Response time, T90 Typically < 120s, depending on the gas flow and measure-ment time.
Operating temperature Short term 0-40⁰C, long term 5-30⁰C, non-condensing
Storage temperature -20⁰C-60⁰C non-condensing
Power supply 100 to 240 VAC/50-60Hz
Run Time 3 Hour Battery, Continuous AC
Power consumption Average 120W; Max 300W
Spectrometer
Resolution User configurable: 1cm-1, 4cm-1, 8cm-1, 16cm-1, 32cm-1, 64cm-1
Scan frequency 6 scans/s
Detector Standard: Sterling Cooled MCT, (Optional Application De-pendent: 2 stage Peltier cooled MCT)
Source SiC, 1550K
Beamsplitter ZnSe
Window material ZnSe
Wave number range 600-4200 cm-1
